Posted by Larry Gibson on Monday, 9 March 2015, at 2:00 p.m., in response to H&R trapdoor, posted by Thomas O'Neill on Monday, 9 March 2015, at 1:06 p.m.

I have fitted 4 original trapdoor BBs (complete with original thumb latches) to H&R trapdoors with complete success including one on my own LBH carbine and one on my own OM. They all required fitting. Not hard to do with basic tools if you know what you are doing and understand how trapdoor BBs are supposed to fit. I can post/email directions if you are interested?